Hand knot-tier.



w. RENFREW. HAND KNOT TIER.

APPLICATION FILED OCT. 6, 1011.

1,041, 1 63. Patented Oct. 15, 1912.

3 SHEETS-SHEET 1.

W. RENFREW.

HAND KNOT TIER.

APPLICATION FILED 001e, 1911.

1,041,163. Patented Oct. 15, 191

2 SBBETS-SHEET 2.

lg as 15E UNITED STATES PATENT OFFICE.

WILLIAM RENFREW, F BROOKLINE, MASSACHUSETTS.

HAND KNOT-TIER.

To all whom it may concern:

Be it known that I, VILLIAM RENFREW, a citizen of the United States ofAmerica, and a resident of Brookline, in the county of Norfolk and Stateof Massachusetts, have invented certain new and useful ImprovementsinHand Knot-Tiers, of which the following is a specification.

This invention relates to knot tying devices which are particularlyadapted for use in cotton and woolen mills to tie together the severedends of a thread or yarn.

The object of the present invention is to provide an inexpensive andsimple device which'may be attached readily to the left hand of theoperator in such a position that the severed ends may be grasped betweenthe thumb and fingers of the left hand, and, with a single movement ofthe right hand, a knot made connecting'the severed ends while theportions beyond the knot. are subsequently cut off by the continuationof said movement.

The invention consists primarily in a slotted member for positioning theends of the thread or yarn and a looper around which a loop may beformed in the yarn or thread, said looper being so pivoted that thetension of the thread or yarn, during the formation of the loop, willcause it to be moved about said pivot, and to permit the jaws with whichsaid looper is provided to seize the standing part of the thread or yarnand thereby permit the loop to pass from the end of the looper over saidstanding part to tie the knot;

The invention further consists in the provision of a knife in the planeof movement of said jaws so that as soon as the knot has been tied theends extending from said knot will be severed therefrom.

The invention further consists in certain novel features of constructionand arrangement of parts which will be readily understood by referenceto the description of the drawings and to the claims hereinafter given.

Of the drawings: Figure 1 represents a plan view of a device embodyingthe features of the present invention showing the same applied to ahand. Fig. 2 represents an elevation of the same. Fig. 3 represents anelevation of the opposite side of the upper part of said device, saidfigure being drawn to an enlarged scale. Fig. 4 represents an end Viewof the knot tying device,

Specification of Letters Patent.

Patented Oct. 15, 1912.

Application filed October 6, 1911. Serial No. 653,290.

drawn to an enlarged scale. Fig. 5 represents a horizontal section ofthe same, the cutting plane being on line 55 of Fig. 2. Fig. 6represents a horizontal section, the cutting plane being on line 6-6 onFig. 2. Figs. 7, 8, 9, 1.0, and 11 represent different positions thelooperand threads or yarns assume in the process of tying a knot. Figs.12, 13, 14, 15, 16, and 17 represent the different stages in the tyingof the knot, and Fig. 18 represents the knot as finally tied andconnecting the ends of two yarns or threads.

Similar characters designate like arts throughout the several figures ofthe crawmgs.

In the drawings, 10 represents a frame having at its upper end thelateral arms 11 and 12, in the outer end of which is mounted the pivotpin 13 adapted to freely oscillate in bearings therein. This pin 13 hasdriven thereon, so as to oscillate therewith, the jaw member 14. Thismember 14 has secured therein the steady pins 15 on which is mounted amovable jaw member 16. The outer end of the jaw members 14 and 16 arebeveled ofl to form a notch 17 for the reception of a thread or yarnduring the process of tying the knot. The opposite ends of the jawmembers 14 and 16 are clamped together by the spring clip 18, thepurpose of this spring clip bcin to normally re tain the adjacent facesor the jaw members 14 and 16 in contact, as indicated in Fig. 5 of thedrawings. The tension of the spring clip 18 is such as to permit themovement of the jaw 16 away from the member 14 sutliciently to admit athread or yarn and to hold it during the knot tying operation. Themember 15 is provided with an extension 19 bent over the member 16 intoits path of movement, thus forming a stop therefor. The jaw member 16 isloosely mounted upon the pivot pin 13, but is compelled to move withsaid pivot by means of the steady pins secured to the member 14 andextending through openings in the side member 16. frame 10 has anopening 20 therein, through which the members 1416 extend. To the outerend of the pivot pin 13 is socured one end of a spiral spring 21, theopposite end of which is secured to a projection 22 formed upon orsecured to the arm 12, the purpose of this spring being to normallyretain the members 1416 in the The vertical portion of the which isformed a thread receivin slot 26,

the end of which is in the same pane with the notch 17 of the looper1416. Secured to the upper face of this arm 25 'in any well-known manneris the knife support 27, having a back stop 28 and side clips 29 adaptedto position a cutting knife 30, the

cutting edge of which is slightly to the rear of the thread positioningslot 26. The frame 10 is riveted to a band 31 adapted to be secured-inany well-known manner to the left hand of the operator as indicated inFig. 1 of the drawings, the band 31 being provided with an extension 32which serves the purpose of steadying the device during the knot tyingoperation. The frame 10 is twist-ed at 33-so that the device will be atan acute angle to the palm of the hand, thus facilitating its use.

In the operation of the device, whenever a yarn or thread breaks, thetwo ends 1) thereof are grasped between the thumb and v :fingers oftheleft hand, and with the right hand these threads or yarns b are placedagainst the edge 34 of the arm 25 and moved along this edge until theyenter the ositioning slot 26 as shown in Fig. 7 o the drawings. At thesame time with the right hand the threads or yarns are carried over thestop member 19 into the shallow groove 24:, as shown in Fig. 8 at 0, andare prevented from slipping toward the pivot 13 by means of the threadstop 23. The threads or yarn still held in the righthand are carriedcompletely around the member 19 and beneath'the same, crossing the partI) at (Z and arethen pulled sufiiciently taut to cause the looper or aws1416 to be moved about the axis of the pivot 13 as shown in Fig. 9 untilthe parts 6 of the threads or yarns extending from the positioning slot26 to the looper enter between the jaws 14 and 16, as

shown in Fig. 10, the tension of these jaws' being suflioient to holdthe threads or yarns until the said standing part has been severed bythe continued movement of the looper in the direction of the arrow at onFig. 2, forcing it against the cutting edge of the knife 30 as indicatedin Fig. 10 at f. The severed ends y will be retained between the jaws14-16 until by the continued movement of the looper in the direction ofthe arrow at the loop will be drawn from the part 19 as indicated inFig. 11, thus tying the knot, after which the severed ends 9 in Fig. 12the yarns b areheld while the bend c is made by passing them over thelooper 19 after which the yarns are passed over the standing part b asat d in Fig. 13. As the looper 19 moves about its pivot into theposition indicated in Fig. 9, the yarns will assume practically theposition shown in Fig. 14. A further movement of the looper will permitthe parts e to enter between the jaws l416 of the looper and the yarnwill be in the position shown in Fig. 15, and at about this time theparts 6 will be severed from the parts of the yarns held by the lefthand. Continued movement of the looper 19 while the ends 9 are still inthe jaws l t -16 will cause the loop to pass from the looper 19 leavingthe yarns in the position shown in Fig. 16. By pulling on the yarns withthe ends 9 still seized by the jaws 14-46, the knot will be pulled tightleaving it in the condition shown in Fig. 17. If now the yarns arebrought into alinement as shown in Fig. 18 it will be apparent that thetwo yarns are tied together.

It is apparent that the device may be adapted for use on either handwithout altering the principles of the invention.

The spring 21, as soon as one knot has been tied, immediately returnsthe looper into its normal position preparatory for another operation.

This makes a very simple knot-tying device, which may be cheaplyconstructed, and which may be operated very rapidly, one quick movementof the right hand tying the knot and severing the ends beyond the knotalways at the same distance therefrom,

so that uniformity in appearance of the tied yarns or threads is theresult.

l Vhen not in operation, the device does not interfere with the use ofthe hands for any other work which the operator is obliged to perform,and yet is ready at any moment for use when it is necessary to connectthe severed threads.

It is believed that the many advantages of a device of this characterwill be fully apparent without any further description.

Having thus described my invention, I claim:

1. In a device of the class described, the combination of a member forpositioning the threads to be tied; a pivot member; and a pair of springjaws with their side faces normally in contact adapted to be encircledby a loop of said threads and movable about the axis of said pivotmember into position to seize the positioned threads while the loop ispassed over the same.

9. In a device of the class described, the combination of a member forpositioning the threads to be tied; a pivot member; a pair of springjaws with their side faces normally in contact adapted to be encircled ba loop of said threads and to be moved a out the axis of said pivotmember into position to seize the positioned threads while the loop ispassed over the same; and a knife in the plane of movement of saidpivoted jaws adapted to sever the threads when the positioned threadshave been seized by said spring jaws.

3. In a device of the class described, the combination of a slottedmember for positioning the threads to be tied; a pivot member; and apair of spring jaws with their side faces normally in contact adapted tobe encircled by a loop of said threads and to be moved about the axis ofsaid pivot member to seize the positioned threads while the loop ispassed over the same.

4. In a device of the class described, the combination of a pivotedmember provided with gripping jaws at its outer end; a fixed threadholder; and a knife thereon interposed between said holder and the pivotof said jaws and in the plane of movement of said pivoted member.

5.. In a device of the class described, the

combination of a frame adapted to be secured to the hand of theoperator; a pair of spring jaws pivoted thereto; a thread stop thereon;an'arm'beneath said pivoted jaws provided with a thread receiving slot;and a knife thereon in the plane of movement of said jaws adapted to cutoff the parts of the thread in said jaws from the parts thereof in saidslot.

6. In a device of the class described, the combination of a frameadapted to be secured to the hand of the operator; a pair of spring jawspivoted thereto; a thread stop thereon; an arm beneath said pivotedj'aws provided with a thread receiving slot; a knife thereon in theplane of movement of said aws adapted to cut ofl" the parts of thethread in said jaws from the parts thereof in said slot; and a springfor returning said jaws to their normal position.

7. In a device of the class described, the combination of a frameadapted to be secured to the hand of the operator and provided with twoparallel lateral arms; a pair of spring jaws pivoted to one of saidarms; a stop member secured to one of said jaws and extending over theother; a spring for returning said jaws to their normal position; and acutting device adapted'to sever the thread seized by said jaws from thestanding part thereof.

8. In a device of the class described, the combination of a frame; amember pivoted thereto; a companion member normally in contact andmovable laterally from said normal position after movement about saidpivot; and a thread or yarn holder in the plane of movement of saidmembers about the axis of said pivot.

9. In a device of the class described, the combination of a frame; amember pivoted thereto; a companion member normally in contact andmovable laterally from said pivoted member and with it about its pivot;a member extending from said pivoted member over the companion memberand adapted to limit the lateral. movement of the latter; means forreturning said members to their normal position after movement aboutsaid pivot; and a thread or yarn holder in the plane of movement of saidmembers about the axis of said pivot.

10. In a device of the class described, the combination of a frame; amember pivoted thereto; a companion member normally in contact andmovable laterally from said pivoted member and with it about its pivot;a thread stop extending over said members; means for returning saidmembers to their normal position after movement about said pivot; and athread or yarn holder in the plane of movement of said members about theaxis of said pivot.

11. In a device of the class described, the combination of a frame; amember pivoted thereto and provided with steady pins; a companion memberon said steady pins and movable lengthwise thereof; a spring for normallretaining said members in contact; a threa stop secured to one of. saidmembers and extending over the other; a thread holder in the plane ofmovement of said pivoted member; and means for returning said pivotedmember to its normal position.

12. In a device of the class described, the combination of a frame; amember pivoted thereto and provided with steady pins; a companion memberon said steady pins and movable lengthwise thereof; a spring fornormally retaining said members in contact; a thread stop secured to oneof said members and extending over the other; a thread holder in theplane of movement of said pivoted member; a cutting blade mountedthereon also in said plane of movement; and means for returning saidpivoted member to its normal position.

13. In a device of the class described, the combination of a framehaving two substantially parallel arms; a knife secured to one of saidarms; means for positioning the threads in front of the cutting edgethereof; and spring thread seizing jaws pivoted to the other arm andmovable in the same plane as said knife.

14. In a device of the class described, the.

combination of a frame having two substant ally parallel arms; a knifesecured to one of said arms; means for positioning the threads in frontof the cutting edge thereof;

combination of .a'frame having two sub,-

stant-ially parallel arms; a knife secured to one of said arms with itscutting edge transversely thereof; means for positioning the threads infront of the cutting edge thereof; and spring thread seizing jawspivoted to the other arm and movable in the same plane as said knife. 7

16. In a device of the class described, the combination of a framehaving two substantially parallel arms; a knife secured to one of saidarms; means for positioning the threads in front of the cutting edgethereof; spring thread seizing jaws pivoted to the other arm and movablein the same plane as said knife; and means for limiting the separationof said jaws. i

17. In a device of the class described, the combination of a framehaving two substantially parallel arms; a knife secured to one of saidarms; means for positioning the threads in front of the cutting edgethereof; means for preventing the accidental severing of said positionedthreads by said knife; and spring, thread seizing jaws pivoted to theother arm and movable in the plane as said knife;

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. 0.

'sitioning means.

same

enses jaws pivoted thereto; an arm beneath and in'the plane of movementof said pivoted jaws provided. with a thread positioning means; and aknife thereon in the plane of movement of said jaws adapted'to cut offtheparts of the thread in said jaws from the parts held by saidpositioning means. 19'. In a device of the class described, thevcombination of a' frame; a pair of spring jaws pivoted thereto; athread stop thereon;

an arm beneath and in the plane of movement of said pivoted jawsprovided with a thread positioning means; a knife thereon in the planeof movement of 'said jaws adapted to out off the parts of the thread insaid jaws from the parts held by said po- 20. In a device of the classdescribed, the combination of a frame; a pair of spring jaws pivotedthereto; anarm beneath and in the plane of movement of said pivoted jawsprovided with a thread receiving slot; a knife thereon in the plane ofmovement of said jaws adapted to cut 0d the parts of the thread in said.jaws from the parts in said slot.

Signed by me at 4 Post'Office Sq., Boston,

"Mass, this 3rd day of October, 1911.

' WVILLIAM RENFREW. Witnesses:

WALTER E. LOMBARD, NATHAN C. LOMBARD.

